Mr. Bill’s height over time is given by the equation, h = -0.1(t + 2)(t - 50) where h is height above ground in metres and t is time in seconds. What was Mr. Bill’s initial height?

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days